EP4106129A1 - Procédé de conception de paramètres pour un adaptateur d'impédance passif de type série approprié pour un courant continu flexible - Google Patents

Procédé de conception de paramètres pour un adaptateur d'impédance passif de type série approprié pour un courant continu flexible Download PDF

Info

Publication number
EP4106129A1
EP4106129A1 EP21923628.8A EP21923628A EP4106129A1 EP 4106129 A1 EP4106129 A1 EP 4106129A1 EP 21923628 A EP21923628 A EP 21923628A EP 4106129 A1 EP4106129 A1 EP 4106129A1
Authority
EP
European Patent Office
Prior art keywords
vsc
parameter
transmission system
impedance
hvdc transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21923628.8A
Other languages
German (de)
English (en)
Inventor
Hong Rao
Changyue ZOU
Shukai XU
Yan Li
Xiaobin Zhao
Weiwei Li
Junjie Feng
Shuangfei YANG
Ting HOU
Lingfei LI
Yuke JI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CSG Electric Power Research Institute
China Southern Power Grid Co Ltd
Original Assignee
CSG Electric Power Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CSG Electric Power Research Institute filed Critical CSG Electric Power Research Institute
Publication of EP4106129A1 publication Critical patent/EP4106129A1/fr
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/34—Arrangements for transfer of electric power between networks of substantially different frequency
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/01—Arrangements for reducing harmonics or ripples
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
    • H02J3/1807—Arrangements for adjusting, eliminating or compensating reactive power in networks using series compensators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0048—Circuits or arrangements for reducing losses
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
    • H02J2003/365—Reducing harmonics or oscillations in HVDC
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/40—Arrangements for reducing harmonics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

Definitions

  • the present disclosure relates to the technical field of optimization of a voltage source converter based high voltage direct current (VSC-HVDC) transmission system, and in particular, to a parameter design method for a series passive impedance adapter applicable to a VSC-HVDC transmission system.
  • VSC-HVDC voltage source converter based high voltage direct current
  • DC transmission adopts a power electronic conversion technique to convert sending-end clean hydropower into high-voltage DCs, and transmit the high-voltage DCs to a receiving-end load center by a long-distance overhead line, which achieves high transmission efficiency, reduces costs, and avoids power transmission corridors.
  • DC transmission has become a main mode of "the west-to-east power transmission project".
  • VSC-HVDC transmission As a new-generation DC transmission technique based on a voltage source converter, VSC-HVDC transmission has significant advantages in new energy accommodation, economy, flexibility and reliability, and has developed rapidly in recent years. However, with an increased capacity of VSC-HVDC transmission and the large-scale application of high-power power electronic equipment in a grid, VSC-HVDC transmission has a risk of high-frequency resonance with the connected grid, affecting security and stability of the grid and security of power equipment.
  • FIG. 1 is a schematic diagram of connecting the VSC-HVDC transmission system to a grid.
  • impedance of the VSC-HVDC transmission system is mismatched with that of a sending-end or receiving-end grid, high-frequency resonance may occur, threatening safe and stable operation of a power system and the VSC-HVDC transmission system.
  • harmonic resonance suppression schemes there are three kinds of harmonic resonance suppression schemes: limiting grid impedance, optimizing the impedance of the VSC-HVDC transmission system, and adding auxiliary equipment.
  • the present disclosure is intended to provide a parameter design method for a series passive impedance adapter, to realize a positive impedance characteristic within a concerned frequency band and completely eliminate a risk of harmonic resonance.
  • an embodiment of the present disclosure provides a parameter design method for a series passive impedance adapter applicable to a VSC-HVDC transmission system, where the series passive impedance adapter includes a capacitor, a resistor, and an inductor, and the capacitor and the resistor are connected to the inductor in parallel after being connected in series; and the parameter design method includes the following steps:
  • the AC impedance of the VSC-HVDC transmission system includes an AC impedance amplitude of the VSC-HVDC transmission system and an AC impedance phase of the VSC-HVDC transmission system
  • the calculating an AC impedance evaluation index of the VSC-HVDC transmission system based on the AC impedance of the VSC-HVDC transmission system includes: calculating the AC impedance evaluation index of the VSC-HVDC transmission system based on the AC impedance amplitude of the VSC-HVDC transmission system, the AC impedance phase of the VSC-HVDC transmission system, an amplitude margin, and a phase angle margin.
  • the parameter change range of the inductor is (0.8 to 1.2) ⁇ the initial parameter of the inductor
  • the parameter change range of the resistor is (1 to 2) ⁇ the initial parameter of the resistor
  • the parameter change range of the capacitor is (0 to 1) ⁇ the initial parameter of the capacitor.
  • C is equal to 100.
  • N is equal to 10.
  • an embodiment of the present disclosure provides a parameter design apparatus for a series passive impedance adapter applicable to a VSC-HVDC transmission system, including a processor, a memory, and a computer program stored in the memory and executed by the processor, where the computer program is executed by the processor to implement the parameter design method for a series passive impedance adapter applicable to a VSC-HVDC transmission system in the first aspect.
  • an embodiment of the present disclosure provides a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program, and the computer program is run to control a device on which the computer-readable storage medium is located to implement the parameter design method for a series passive impedance adapter applicable to a VSC-HVDC transmission system in the first aspect.
  • the embodiments of the present disclosure can realize a positive impedance characteristic within a concerned frequency band and completely eliminate a risk of harmonic resonance.
  • FIG. 2 is a schematic principle diagram of a series passive impedance adapter.
  • FIG. 3 is a schematic diagram of a connection position of the series passive impedance adapter (which is for schematic description only, and the adapter is also applicable to a multi-terminal system).
  • Z grid represents impedance of an AC grid, where an amplitude changes within (0, + ⁇ ), a phase angle changes within (-90°, +90°), and a real part is always positive.
  • Z 1 represents AC impedance of a Modular Multilevel Converter (MMC) of a VSC-HVDC transmission system
  • Z 2 represents the passive impedance adapter.
  • Z 1 has a negative real part in some frequency bands
  • Z 2 has a positive real part within a preset frequency band range, and when a sum of real parts of Z 1 and Z 2 is greater than 0, a resonance risk can be eliminated.
  • MMC Modular Multilevel Converter
  • FIG. 4 is a schematic structural diagram of a most simplified series passive impedance adapter.
  • the series passive impedance adapter includes a capacitor, a resistor, and an inductor, and the capacitor and the resistor are connected to the inductor in parallel after being connected in series.
  • the resistor R, the capacitor C, and the inductor L have the following characteristics:
  • the resistor R and the capacitor C are resistive in medium and high frequency bands and are connected to AC impedance of the VSC-HVDC transmission system in series to ensure that a real part of impedance of a converter station is positive.
  • the inductor L isolates a fundamental current.
  • the series passive impedance adapter has an inductance characteristic at a fundamental frequency to avoid an excessive loss caused by an excessive fundamental current flowing through a branch of the resistor.
  • a parameter design goal is that reactive power consumed by the series passive impedance adapter is not more than A times rated power of a converter, and a loss of the series passive impedance adapter in a fundamental wave is B times the rated power of the converter.
  • A is set to 2%
  • B is set to 1/100000.
  • a parameter design method for a series passive impedance adapter provided in the embodiments of the present disclosure includes steps 1 to 3, and step 2 includes sub-steps S20 to S29.
  • S22 Determine an initial parameter of the resistor based on a premise that a resistance value of the resistor is greater than or equal to a maximum value of the AC impedance evaluation index of the VSC-HVDC transmission system within the specified frequency range.
  • S23 Determine an initial parameter of the capacitor based on a premise that capacitive reactance of the capacitor is C times inductive reactance of the inductor.
  • S24 Determine a parameter change range of the inductor based on the initial parameter of the inductor and a preset multiple change range of the initial parameter of the inductor.
  • S25 Determine a parameter change range of the resistor based on the initial parameter of the resistor and a preset multiple change range of the initial parameter of the resistor.
  • S26 Determine a parameter change range of the capacitor based on the initial parameter of the capacitor and a preset multiple change range of the initial parameter of the capacitor.
  • S27 Determine a parameter combination change range based on the parameter change range of the inductor, the parameter change range of the resistor, and the parameter change range of the capacitor.
  • S28 Calculate a reactive power consumption and an active power loss of the series passive impedance adapter under each parameter combination within the parameter combination change range; where for any parameter combination, if the reactive power consumption of the series passive impedance adapter is greater than A times the rated power of the converter, or Re ⁇ Z adapter ( f ) ⁇ > X ( f ) is not always satisfied within the specified frequency range, the active power loss is denoted as N ⁇ B times the rated power of the converter, where Re ⁇ Z adapter ( f ) ⁇ represents a real part of an impedance transfer function of the series passive impedance adapter, and X(f) represents the AC impedance evaluation index of the VSC-HVDC transmission system.
  • the AC impedance of the VSC-HVDC transmission system includes an AC impedance amplitude of the VSC-HVDC transmission system and an AC impedance phase of the VSC-HVDC transmission system
  • the calculating an AC impedance evaluation index of the VSC-HVDC transmission system based on the AC impedance of the VSC-HVDC transmission system includes: calculating the AC impedance evaluation index of the VSC-HVDC transmission system based on the AC impedance amplitude of the VSC-HVDC transmission system, the AC impedance phase of the VSC-HVDC transmission system, an amplitude margin, and a phase angle margin.
  • this embodiment of the present disclosure can realize a positive impedance characteristic within a concerned frequency band and completely eliminate a risk of harmonic resonance.
  • GM represents the amplitude margin, in units of dB
  • PM represents the phase angle margin, which is selected based on an engineering requirement.
  • GM may be 3dB
  • PM may be 3 deg.
  • the AC impedance amplitude and the AC impedance phase of the VSC-HVDC transmission system can be obtained through impedance scanning or calculated according to corresponding formulas.
  • resonance may occur in a frequency band with X(f) > 0 .
  • C is equal to 100.
  • N is equal to 10.
  • the parameter change range of the inductor is (0.8 to 1.2) ⁇ the initial parameter of the inductor
  • the parameter change range of the resistor is (1 to 2) ⁇ the initial parameter of the resistor
  • the parameter change range of the capacitor is (0 to 1) ⁇ the initial parameter of the capacitor.
  • inductance of the inductor L AC equivalent inductor of the VSC-HVDC transmission system
  • a delay of a control link is 300 ⁇ s
  • a PI control parameter is 90900
  • a butterworth low-pass filter with a cut-off frequency of 200 Hz is adopted for feedforward
  • a rated capacity is 1500 MW
  • the AC impedance of the VSC-HVDC transmission system includes an AC impedance amplitude mag ( f ) of the VSC-HVDC transmission system and an AC impedance phase phase(f) of the VSC-HVDC transmission system.
  • A is set to 2%
  • B is set to 1/100000.
  • An active power loss of the series passive impedance adapter within a range of 0.8L-1.2L, 0-C, and R-2R is obtained to obtain a parameter combination with a lowest active power loss.
  • the active power loss is 2.22 kW, and a reactive power consumption is 24 Mvar.
  • An active power loss of the series passive impedance adapter within the range of 0.8L-1.2L, 0-C, and R-2R is obtained to obtain a parameter combination with a lowest active power loss.
  • a fundamental loss is 2.8 kW, and the reactive power consumption is 18.9 Mvar.
  • An Re ⁇ Z adapter ( f ) ⁇ curve and an X ( f ) curve under the parameter combination are obtained, as shown in FIG. 7 . It can be seen from FIG. 7 that if Re ⁇ Z adapter ( f ) ⁇ > X(f) is always satisfied within the specified frequency range, A is reduced to 1.2%.
  • This embodiment of the present disclosure provides a parameter design apparatus for a series passive impedance adapter, including a processor, a memory, and a computer program stored in the memory and executed by the processor, where the computer program is executed by the processor to implement the above-mentioned parameter design method for a series passive impedance adapter.
  • This embodiment of the present disclosure provides a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program, and the computer program is run to control a device on which the computer-readable storage medium is located to implement the above-mentioned parameter design method for a series passive impedance adapter.
  • the computer program may be stored in a computer-readable storage medium.
  • the computer program is executed by a processor to perform the steps of the foregoing method embodiments.
  • the computer program includes computer program code, and the computer program code may be in a form of source code, a form of object code, an executable file or some intermediate forms, and the like.
  • the computer-readable medium may include: any physical entity or apparatus capable of carrying the computer program code, a recording medium, a USB disk, a mobile hard disk drive, a magnetic disk, an optical disc, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunications signal, a software distribution medium, and the like. It should be further noted that the content contained in the computer-readable medium may be added or deleted properly according to the legislation and the patent practice in the jurisdiction. For example, in some jurisdictions, depending on the legislation and the patent practice, the computer-readable medium may not include the electrical carrier signal or the telecommunications signal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Filters And Equalizers (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
EP21923628.8A 2021-05-07 2021-06-06 Procédé de conception de paramètres pour un adaptateur d'impédance passif de type série approprié pour un courant continu flexible Pending EP4106129A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110497674.7A CN113224760B (zh) 2021-05-07 2021-05-07 适用于柔性直流的串联型无源阻抗适配器参数设计方法
PCT/CN2021/098509 WO2022233079A1 (fr) 2021-05-07 2021-06-06 Procédé de conception de paramètres pour un adaptateur d'impédance passif de type série approprié pour un courant continu flexible

Publications (1)

Publication Number Publication Date
EP4106129A1 true EP4106129A1 (fr) 2022-12-21

Family

ID=77091597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21923628.8A Pending EP4106129A1 (fr) 2021-05-07 2021-06-06 Procédé de conception de paramètres pour un adaptateur d'impédance passif de type série approprié pour un courant continu flexible

Country Status (4)

Country Link
US (1) US20240204528A1 (fr)
EP (1) EP4106129A1 (fr)
CN (1) CN113224760B (fr)
WO (1) WO2022233079A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116822436B (zh) * 2023-06-30 2024-02-27 四川大学 一种直流输电送端交流系统的振荡风险灵敏度分析方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9667063B1 (en) * 2016-02-19 2017-05-30 Wilsun Xu Harmonic filter for multipulse converter systems
CN106253337B (zh) * 2016-08-19 2018-08-14 南京航空航天大学 一种用于镇定多台逆变器并网系统的阻抗适配器
CN108173288B (zh) * 2018-02-09 2020-01-31 合肥工业大学 抑制多逆变器并网系统谐振的电压型阻抗适配器控制方法
CN109768565B (zh) * 2019-02-27 2020-07-10 南方电网科学研究院有限责任公司 适用于柔性直流的无源阻抗适配器参数设计方法及装置
CN110058084B (zh) * 2019-04-15 2021-06-08 南方电网科学研究院有限责任公司 一种换流变压器的谐波阻抗测量系统及方法
CN110649620B (zh) * 2019-11-21 2021-07-30 南方电网科学研究院有限责任公司 一种基于控制参数调制的换流器直流谐振抑制方法及装置
CN113162069B (zh) * 2021-04-22 2022-07-19 武汉大学 有源/无源阻尼抑制柔性直流输电系统高频振荡的方法

Also Published As

Publication number Publication date
WO2022233079A1 (fr) 2022-11-10
CN113224760A (zh) 2021-08-06
CN113224760B (zh) 2022-04-12
US20240204528A1 (en) 2024-06-20

Similar Documents

Publication Publication Date Title
CN111654041B (zh) 一种柔性直流输电系统高频振荡抑制策略
EP3780312B1 (fr) Procédé et appareil de conception de paramètre d'adaptateur d'impédance passive applicables à un courant continu flexible
CN101335456B (zh) 一种基于gprs的配电网无功优化补偿系统及其控制方法
CN111740455A (zh) 一种交流不平衡电压与直流脉动电压统一补偿的母线接口变换器控制方法
WO2022161095A1 (fr) Procédé de suppression multi-échelle d'ondulation de tension de condensateur de sous-module en demi-pont mmc
CN103050975A (zh) 一种用于高压大容量电压源变流器的参数设计方法
CN109904866A (zh) 一种多元储能的微电网并网协调控制方法及其系统
EP4106129A1 (fr) Procédé de conception de paramètres pour un adaptateur d'impédance passif de type série approprié pour un courant continu flexible
CN105244910A (zh) 一种提高微电网交流母线电能质量的控制方法
CN110391674A (zh) 一种台区专用变流器及其控制方法
CN103048547A (zh) 一种柔性直流输电用平波电抗器的参数设计方法
CN117878957A (zh) 一种upqc系统及统一建模的状态反馈解耦方法
CN110556837B (zh) 基于四绕组感应滤波电力变压器的电网谐波屏蔽方法
CN112615378B (zh) 配电网高频谐振频移方法、装置以及计算机可读存储介质
Chen et al. Summary of research on multi-infeed short circuit ratio in AC and DC systems
CN204391749U (zh) 谐振式限流系统
CN114865680A (zh) 一种模块化多电平换流器的特定谐振频率抑制方法
CN113346521A (zh) 基于阻抗调谐的柔性直流输电系统的高频振荡抑制方法
CN114172165A (zh) 基于电缆入地场景下配置svg的配电网降损方法
CN208352983U (zh) 单相可双向连续调节的静止无功补偿器
CN113612262A (zh) 一种抑制直流侧低频振荡的方法及系统
CN207345518U (zh) 一种带有源滤波功能的交流充电桩
CN202384762U (zh) 一种35kV并联混合型电网谐波有源滤波成套装置
CN205544322U (zh) 一种无需交直流电流传感器的多电平储能功率转换控制装置
CN201207570Y (zh) 配电网容性无功动态连续调节装置

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220812

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CHINA SOUTHERN POWER GRID

Owner name: ELECTRIC POWER RESEARCH INSTITUTE. CHINA SOUTHERN POWER GRID